Recommendation is to avoid using the year nomenclature as this
information is already encoded in the git repo. Avoids needing to
repeatly update.
Also updates AUTHORS.txt from current repo with contributor names
Pinned packages don't affect available update notification and will not
be updated with "Update All" button. Manual update is still possible but
will trigger a confirmation dialog.
Adds package update available state, package update operation and all
the corresponding logic around it to make updating package to another
version easy.
